eng Ansari Education and Research Society Journal of Ultra Scientist of Physical Sciences August 2009 21 2 395 402 jusps-B 1137 article Effect of variable viscosity on the peristaltic motion of a Jeffrey fluid in a symmetric channel M. Sreedhar Babu 1 N. Bhaskar Reddy 1 M. V. Subba Reddy 2 Department of Mathematics, Tirupati 517502 (AP) (INDIA) Department of Mathematics, Sri Venkateswara Institute of Science & Technology, Kadapa - 516 003 (AP) (INDIA) <p style="text-align: justify;">The peristaltic motion of an incompressible Jeffrey fluid with variable viscosity in a two-dimensional symmetric channel under the long wavelength and low Reynolds number assumptions is investigated. Analytical solutions are obtained for axial velocity and axial pressure gradient. The effects of viscosity parameter a, material parameter l<sub>1</sub> and amplitude ratio f on the pumping characteristics and the friction force are studied through graphs in detail.</p> <p>&nbsp;</p> https://ultraphysicalsciences.org/paper/1137/ Peristaltic flow Jeffrey fluid variable viscosity.